I think because the Echo Arena now exists on the same road, the council wouldn't approve plans for us to have a massive arena right next to it, with a retractable roof and pitch because, for them, it would detract from the Echo Arena. It just highlights that we really missed the boat with the Kings Dock stadium.
I can sort of understand the argument that the retractable roof on its own, wouldn't add that much revenue, because you can only really use it from May to August for other events, because you wouldn't want people trampling all over the pitch, you need the retractable pitch as well, so it can be used as an indoor area all year round, then you can get your moneys worth. Like the Veltins Arena and Germany. But I am not sure there is enough room for a retractable pitch on the site. Unless it went into the "fan zone" area and that would affect access.